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Home >> Pontiac >> 2005 >> Aztek Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Engine Exhaust System >> Repair Instructions >> Catalytic Converter Replacement >> Removal Procedure
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Removal Procedure

NOTE: To prevent internal damage to the flexible coupling of the catalytic converter assembly, the converter must be supported. The vertical movement at the rear of the catalytic converter assembly must not exceed 6 degrees up or down.
    Fig 1: Exhaust Manifold Pipe Stud
    GM260064Courtesy of GENERAL MOTORS CORP.
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. If the vehicle is equipped with All-Wheel-Drive, remove the propeller shaft. Refer to Propeller Shaft Replacement in Propeller Shaft.
  3. Remove the catalytic converter nuts from the exhaust manifold studs.
  4. Remove the oxygen sensor. Refer to Heated Oxygen Sensor Replacement - Position 2 in Engine Controls - 3.4L.
    5. Fig 2: View Of Catalytic Converter Bolts
    GM739224Courtesy of GENERAL MOTORS CORP.
  5. Remove the catalytic converter bolts.
  6. Remove the catalytic converter.
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